Publication detail

Photogrammetry based system for the measurement of cylindrical forgings axis straightness

ZATOČILOVÁ, A. POLIŠČUK, R. PALOUŠEK, D. BRANDEJS, J.

Original Title

Photogrammetry based system for the measurement of cylindrical forgings axis straightness

English Title

Photogrammetry based system for the measurement of cylindrical forgings axis straightness

Type

conference paper

Language

en

Original Abstract

This paper presents an approach to the axis straightness measurement of cylindrical forgings and shows results of the first experimental measurement in laboratory conditions. The proposed image-based system is based on the assumption that actual shape of the cylindrical forging axis can be determined (in the simplest case) from four boundary curves which lie in two mutually perpendicular planes. Four boundary curves can be obtained by detecting forging edges in two images. The measurement approach was tested in laboratory conditions on the cylindrical rod sample of room temperatures with length of 700 mm and diameter of 45 mm. Results of image-based measurement ware compared with results of measurement by industrial 3D scanner Atos III Triple Scan. In the case of maximum deflection size, the difference between both measurement methods is less than 0.3 mm; in the case of angle of maximal deflection is less than 3 degrees. Despite the positive forecasts, additional measurements must be performed to determine the repeatability of the measurement on different sized samples. Further work will be devoted to testing and optimizing the measurement of hot forgings.

English abstract

This paper presents an approach to the axis straightness measurement of cylindrical forgings and shows results of the first experimental measurement in laboratory conditions. The proposed image-based system is based on the assumption that actual shape of the cylindrical forging axis can be determined (in the simplest case) from four boundary curves which lie in two mutually perpendicular planes. Four boundary curves can be obtained by detecting forging edges in two images. The measurement approach was tested in laboratory conditions on the cylindrical rod sample of room temperatures with length of 700 mm and diameter of 45 mm. Results of image-based measurement ware compared with results of measurement by industrial 3D scanner Atos III Triple Scan. In the case of maximum deflection size, the difference between both measurement methods is less than 0.3 mm; in the case of angle of maximal deflection is less than 3 degrees. Despite the positive forecasts, additional measurements must be performed to determine the repeatability of the measurement on different sized samples. Further work will be devoted to testing and optimizing the measurement of hot forgings.

Keywords

Edge detection ; Photogrammetry, Forging, Axis straightness measurement

RIV year

2013

Released

13.04.2013

Publisher

Proc. SPIE

Location

Munich, , Germany

ISBN

9780819496041

Book

Optical Measurement Systems for Industrial Inspection VIII

Edition number

8788

Pages from

87881L-1

Pages to

88781L-10

Pages count

10

Documents

BibTex


@inproceedings{BUT100091,
  author="Aneta {Zatočilová} and Radek {Poliščuk} and David {Paloušek} and Jan {Brandejs}",
  title="Photogrammetry based system for the measurement of cylindrical forgings axis straightness",
  annote="This paper presents an approach to the axis straightness measurement of cylindrical forgings and shows results of the first experimental measurement in laboratory conditions. The proposed image-based system is based on the assumption that actual shape of the cylindrical forging axis can be determined (in the simplest case) from four boundary curves which lie in two mutually perpendicular planes. Four boundary curves can be obtained by detecting forging edges in two images. The measurement approach was tested in laboratory conditions on the cylindrical rod sample of room temperatures with length of 700 mm and diameter of 45 mm. Results of image-based measurement ware compared with results of measurement by industrial 3D scanner Atos III Triple Scan. In the case of maximum deflection size, the difference between both measurement methods is less than 0.3 mm; in the case of angle of maximal deflection is less than 3 degrees. Despite the positive forecasts, additional measurements must be performed to determine the repeatability of the measurement on different sized samples. Further work will be devoted to testing and optimizing the measurement of hot forgings.",
  address="Proc. SPIE",
  booktitle="Optical Measurement Systems for Industrial Inspection VIII",
  chapter="100091",
  doi="10.1117/12.2020917",
  howpublished="print",
  institution="Proc. SPIE",
  year="2013",
  month="april",
  pages="87881L-1--88781L-10",
  publisher="Proc. SPIE",
  type="conference paper"
}